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Rapid Drawdown in Homogeneous Earth Dam Considering Transient Flow and Suction
Reducción rápida en presas de tierra homogéneas considerando flujo transitorio y succión
DOI:
https://doi.org/10.15446/ing.investig.v40n1.80002Keywords:
rapid drawdown, unsaturated soils, suction, slope stability, homogenous earth dam (en)reducción rápida, suelos no saturados, succión, estabilidad de talud, presa de tierra homogénea (es)
The present work intends to demonstrate the advantages of considering transient flow regime in the stability analysis of the upstream slope for the rapid drawdown situation of a homogeneous earth dam. Upstream slope stability evaluations were carried out, considering pore pressure and suction from transient flow analysis while simulating rapid drawdown of the reservoir. The evaluations comprised different geometries of the upstream slope (from 1V:1.1H to 1V:2.5H) and heights varying from 10 m to 50 m, as well as several low permeability materials (SM, SM-SC, SC, ML, ML-CL, CL, MH and CH). In addition, equations relating the safety factor to such slopes or dam height were adjusted to the analysis data, in order to define the minimum slope for a certain dam height or the maximum height for a given upstream slope. The results have shown that, considering the transient flow condition, including suction, within the slope stability analysis of the rapid drawdown situation, increases the safety factor in relation to the simplified analysis that is usually adopted. This also results in much steeper slopes (for a safety factor of 1.1) than the ones recommended by the U.S. Bureau of Reclamation (USBR), suggesting the importance of performing transient flow analysis for rapid drawdown situations and considering its results instability analysis.
El presente trabajo pretende demostrar las ventajas de considerar el régimen de flujo transitorio en el análisis de estabilidad de talud aguas arriba para la situación de reducción rápida de una presa de tierra homogénea. Se llevaron a cabo análisis de estabilidad de taludes aguas arriba, considerando la presión de poro / succión para análisis de flujo transitorio que simula la reducción rápida del embalse. Los análisis comprendieron diferentes geometrías del talud aguas arriba (de 1V: 1.1H a 1V: 2.5H), alturas que varían de 10 m a 50 m, así como varios materiales de baja permeabilidad (SM, SM-SC, SC, ML, ML-CL, CL, MH y CH). Además, las ecuaciones que relacionan el factor de seguridad con dichos taludes o la altura de la presa se ajustaron a los datos de análisis, para definir el talud mínimo para una determinada altura de la presa o la altura máxima para un determinado talud aguas arriba. Los resultados han demostrado que: teniendo en cuenta la condición de flujo transitorio, incluida la succión, en el análisis de estabilidad de taludes de la situación de reducción rápida, aumenta el factor de seguridad en relación con el análisis simplificado que generalmente se adopta. Esto también ha resultado en taludes mucho más pronunciados, para un factor de seguridad de 1.1, que los recomendados por la Oficina de Reclamación de los E.E.U.U. (USBR), sugiriendo la importancia de realizar análisis de flujo transitorio para las situaciones de reducción rápida y considerando sus resultados en el análisis de estabilidad.
References
ASTM D2487-11 (2011). Standard practice for classification of soils for engineering purposes (unified soil classification sys-tem). West Conshohocken, PA ASTM International. https://doi.org/10.1520/D2487-11
ASTM D5298-03 (2003). Standard Test Method for Measurement of Soil Potential (Suction) Using Filter Paper. West Con-shohocken, PA
ASTM International. https://doi.org/10.1520/D5298-03
Alonso, E. and Pinyol, N. (2009), Slope stability under rapid drawdown conditions. Barcelona: Universidad Politécnica de Catalunya. https://upcommons.upc.edu/bitstream/handle/2117/11200/01_IWL2009_Alonso-Pinyol.pdf
Alonso, E. and Pinyol N. (2016). Numerical analysis of rapid drawdown: Applications in real cases. Water Science and Engineering. 9(3), 175-182. https://doi.org/10.1016/j.wse.2016.11.003
Berligen, M. M. (2007). Investigation of stability of slopes under drawdown conditions. Compute Geotechnics 34(2), 81-91. https://doi.org/10.1016/j.compgeo.2006.10.004
Chandler, R.J., Crilly, M.S. and Montgomery-Smith, G. (1992). A low-cost method of assessing clay desiccation for low-rise buildings. Proceedings of the Institution of Civil Engineers-civil Engineerin, 92, 82–89. https://doi.org/10.1680/icien.1992.18771
Chandler, R. J. and Gutierrez C.I. (1986). The filter-paper meth-od of suction measurement. Geotechnics, 36(2), 265-268. https://doi.org/10.1680/geot.1986.36.2.265
Cruz, P.T. (1996). 100 Barragens Brasileiras: Historic Cases, Mate-riais de Construção e Projeto. São Paulo: Oficina de Textos.
Fredlund, D. G. and Rahardjo, H. (1993). Soil mechanics for unsaturated soils. New Jersey: John Wiley ando Sons.
Fredlund, D. G. and Xing, A. (1994). Equations for the Soil-Water Characteristic Curve. Canadian Geotechnical Journal, 521-532. https://doi.org/10.1139/t94-061
Fredlund, D. G., Xing, A., and Huang, S. (1994). Predicting the permeability function for unsaturated soils using the soil-water characteristic curve. Canadian Geotechnical Journal, 31(4), 533-546. https://doi.org/10.1139/t94-062
Fattah, M. Y., Omran, H. A., and Hassan, M. A., (2017). Flow and Stability of Al-Wand Earth Dam during Rapid Drawdown of Water in Reservoir. Acta Montanistica Slovaca, 22(1), 43-57.
Fattah, M. Y., Omran, H. A., and Hassan, M. A., (2015). Behavior of an Earth Dam during Rapid Drawdown of Water in Reservoir – Case Study. International Journal of Advanced Research, 3(10), 110 -122.
Fattah, M. Y., Al-Labban, S. N. Y., and Salman, F. A. (2014). Seepage Analysis of a Zoned Earth Dam by Finite Elements. International Journal of Civil Engineering and Technology (IJCIET), 5(8), 128-139.
Geostudio International. (2007a). Seepage Modeling with SEEP/W 2007. Calgary, Alberta, Canadá.
Geostudio International. (2007b). Seepage Modeling with SLOPE/W 2007. Calgary, Alberta, Canadá.
Kranh, J. (2004). Stability modelling with SLOPE/W - An Engineer-ing Methodology. Alberta, Canada: GEO-SLOPE/W Interna-tional Ltd.
Lambe, T. W., and Whitman, R. (1969). Soil Mechanics. Spanish version of the English edition of 1969, Madrid: Limusa.
Lane P. A. and Griffiths D. V. (2000). Assessment of stability of slopes under drawdown conditions. Journal of Geotechnical and Geoenvironmental Engineering, 126, 443–450. https://doi.org/10.1061/(ASCE)1090-0241(2000)126:5(443)
Leme Ferreira, R. (2015). Avaliação de uma metodologia para projeto de pequenas barragens de terra no semiárido: cons-trução, ensaios e modelagem numérica. (Doctoral dissertation), Universidade Federal do Ceará, Fortaleza, Brasil. http://www.repositorio.ufc.br/handle/riufc/16525
Llanque, G.R.A. (2018). Verificação da estabilidade do talude de montante em barragem de terra submetida a rebaixa-mento rápido realizada com ensaios em solos não saturados e modelagem numérica. (Master’s thesis), Universidade Fe-deral do Ceará, Fortaleza, Brasil. http://www.repositorio.ufc.br/handle/riufc/31763
Marinho, F.A.M. (1994). Shrinkage behavior of some plastic clays. PhD Thesis, Imperial College, University of London.
Marinho, F.A.M., and Oliveira, O.M. (2006). The filter paper method revised. ASTM geotechnical testing journal, USA, 29(3), 250–258.
Morgenstern, N.R. (1963). Stability charts for earth slopes during rapid drawdown. Geotechnique, 13, 121-131. https://doi.org/10.1680/geot.1963.13.2.121
Morgenstern, N. R. and Price, V. E. (1965). The analysis of the stability of general slip surfaces. Geotechnique, 15,79-93. https://doi.org/10.1680/geot.1965.15.1.79
NBR 11.682 (2009). Estabilidade de taludes. ABNT, Associação brasileira de normas técnicas.
NBR 14.545 (2000). Solo - Determinação do coeficiente de permeabilidade de solos argilosos a carga variável. ABNT, Associação brasileira de normas técnicas.
Pinyol, N. M., Alonso, E. E., and Olivella, S. (2008). Rapid draw-down in slopes and embankments. Water Resources Research, 44, W00D03. https://doi.org/10.1029/2007WR006525
Ridley, A.M. (1993). The measurement of soil moisture suction. PhD thesis, University of London.
Sherard, J. L. (1953). Influence of Soil Properties and Construc-tion Methods on the Performance of Homogeneous Earth Dams. Technical Memorandum 645. Denver, CO: Bureau of Reclamation.
Stephens, T. (2011). Manual on small earth dams - Guide to the location, design and construction. Roma: Food and Agricul-ture Organization of the United Nations.
Teixeira, R. S. and Vilar, O. M. (1997). Shear Strength of a Com-pressed Soil not Saturated. Proceedings of the 3rd Brazilian Symposium on Unsaturated Soils, 1,161-169. Rio de Janeiro.
U.S ARMY CORPS OF ENGINEER. (2003). Engineering and design Slope Stability. Washington, D.C.: U.S. Government.
U.S. BUREAU OF RECLAMATION. (2002). Design of Small Dams, A Water Resources Technical Publication. Washington, D.C.: U.S. Government.
Van Genuchten, M. T. (1980). A closed-form equation for pre-dicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal, 5(44), 892–898. https://doi.org/10.2136/sssaj1980.03615995004400050002x
Wang, J. J., Zhang, H. P., Zhang, L., and Liang, Y. (2012). Exper-imental study on heterogeneous slope responses to draw-down. Engineering Geology, 147-148, 52-56. https://doi.org/10.1016/j.enggeo.2012.07.020
Yan Z. L., Wang, J. J., Chai, H. J. (2010). Influence of water level fluctuation on phreatic line in silty soil model slope. Engineering Geology, 113(1-4), 90-98. https://doi.org/10.1016/j.enggeo.2010.02.004
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Copyright (c) 2020 Grover Romer Llanque Ayala, Francisco Chagas da Silva Filho, Rosiel Ferreira Leme, Maria do Carmo Reis Cavalcanti, Claudio Fernando Mahler
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